Vehicle brake



Y A. E. DEIYSS' VEHICLE BRAKE Filed Aug. 25. 1950 4 Sheets-Sheat l A llomey A. E. DEYSS VEHICLE BRAKE Aug, 30, 932.

Filed Aug. 25, 1930 4 Sheets-Sheet 2 7 A .E De ss 3.11%

A llomey Filed Aug- 1950 E. DEYSS VEHICLE BRA 4 s f -Sheet 5 A ilorney 30, 1932. DEYSS 1,874,252

VEHICLE BRAKE Filed Aug. 25, 1930 4 Sheets-Sheet 4 Hllll 1' nvenior l m l H illlillm nlll 1 fga H: Aiwmey Patented Aug. 30, 1932 i Whining-Or ana sCnobAbx ,'1mw vonx' This inventibn relates lit-0331117 to brakes for vehicles "aha has morefparticular rein ence to a 'briike Tor-Self pro 'llefl' vehielee sucha's automobiles undthe Ii e. v I The prima ebjectefthiinventienis'to pruvide a brzi e 1 whidh ma be *reeilily associated with the vvheei of the vehicle, requiring vbut e minimum 'elterattiomin the censtruction ofthe 'vehixile'forad'apting the vehiele'itea' hreikedf thisicliareeter. A still further obje'dtofthe inventionis to provide efhydraulic brakei for Self fpi upelled vehicles, it being an impqrtaii tdbject ef the invention itp peruiit hi "the vehirile having eaeh-dfthev r'heek eguippedwitha brnke of the veham'cixa r pf lthe present invention or merely; the rear wheels so eguippedus suits 'the operator of'the'ivehicle. g

Briefly st'zite V ,the invention emnprehenfls the connecting offaj wheel 'of the with a, circulation systemfjsnthat fthewheelfdrives epair oflpis'ton's" eauei'ngf eimediuin to circulate i sy e t mid- ;f r r to Pr vid suitable 'IIIB'EIIS vsfithinTthe gyetem Eel-"Ste r ping'the 'cireiilatinn, 'erff desired; tof'inere y check the circulation; whereby jthe irritation of the is checked or rtft'ard eii for-decreasing the speed offthe 'vhie'le grfbrir lging the Latterto a cjo'mplete'stop. ,"Q I I x Other objects gand advantages Idf theinvention willbecome apparent during a study of the fellowing description, 'ta'ikeng -i'n connection with the racco xnpanying f drawings wherein: .j V .e V

Figure Irish side elevatiendlj view oi'the brake-the same being shown as applied to. the

vehicle fin operative relation with one tear wheel of the vehi ele the remaining oneof the rear wheels heingremoved; I FigurefQ isimfraglnentnny topzplenview as outlined, of the J chassis :of 1* melt-Or vehicle having myadeviceamidted-thenewith,

Fi giim- .3 is 11 mp plan vvievviofithe 'bmke device, the being shown as i-applied'zto one rem-"wheel Iof'the vehicle, iF'gune is :e dietailrsebtimml Wiew :taken substantially onL-tlm line-Hunt 11, Figurefi zismrzldngitndinafiseetibnnl View, eertain aparts zheing iebvlfi'fln "the chassis bars 1, the rear axlejhousing of the m8 vehicle being. deigneted by the win-emu ch'amter 2,ithemear: axle beingfleai'ly in Figure 4 being"desigmted bylthe refemnee 3hnramter3,' and the two leet-wheels hy reference character 4; i rm brake meehmiismflhe same'cumpris'ing a ypair of hbrimntillydisposed I alined *cyliniiers 5 mflfi; which-is equipped with a suitably a ertu'red attaching "flange 7 47 cyi inder may-be supporbeii fromithe chassis bar 1.

Eaeh of theeylindetshasworkeifleftheiein e piston '8, whieh' pistons i are provided with a common piston rod 9. Carried bythe rod 9,

and arranged in each qfthe cylinders,-in longmdimi -s a ed ml xion tn thegpistons i sub-piston 10. Exteriorlyo'f the ey'liniiers,

llf terwh ich is ivomuv 'eormected as 12 the forke dend of e'puh rod 13. The push 108 15 at its end is equipped with um hite'gml unmilus 1Y4, f

iii-he wing '14; as Shown in Figure 4is'irrlunged between a. pair of similar disks "1 5 eniI-wrespe'ctively Iom-etution with-thefliks. 'Gne o'fflthe fliks 16 is rotata'bly mounted 'vvith'in theeriiarged annular heei'l 1V ibn'the end o'f-the a-x'lehousingQ. The-Other UE thedisk SnameIythe dislk '15is bo1ted ethervvise'secured as; at "18 to thehfib portion 1 the-vehicle wheel 4, "Each o'fthediks1'5 unfl 16 is provided, of course, wit'kfi a central opening for 'mcommodating the end mim -2r :Fumrmm, eaeh of thedisks on its inner face is provided with an eccentric groove 20 for accommodating one end portion of the ring 14. The disks 15 and 16 have interposed therebetween a suitable shim 21, and the disks, and shim are maintained in assembled relation through the medium of suitable bolts22. The shim 21 is arranged eccentricallyfwith respect to the disks, and is pro.- vided with an eccentric opening for accom modating the end portion of the axle as is apparent. v i

From the foregoing then it will be seen that as the wheel 4 rotates, oscillatory movement is imparted to the push rod 13 which in. turn: transmits reciprocatorymoveinent to the piston'rod 9 for reciprocating the pistons 8 in their respective cylinders. Of course, the pistons 10 will also be reciprocated during reciprocation of the piston 8,. w

Each of the cylinders adjacent one end is provided with a filling neck 23 normally closed through the medium of a cap24. Into the: filling neck 23 for disposition within the cylinder betweenthe pistons 8 and 10, may be applied a suitable lubricant as for example 0il25. Each of the'cylinders adjacent its other end, is provided with'a porti26 adapted to register with one end of a substantially U-shaped fluid conduit pipe designated generallyby the reference character 27. The pipe 27 at the end thereof-is suitably coupled tothe cyl inders for registry with the port 26'through any suitable coupling means such as suggested at 28.

Arranged intermediate the fluid conduit pipe 27 is a suitable control valve 29'that includes among other parts, a crank arm 30."

The crank arm 30 may be operated by the operator of thevehicle for controlling the opening and closing of the valve 29 by any suitable means and dependent upon whether one or more wheels of the vehicle is equipped with a brake of the character described.

Adjacent one end thereof, the pipe 27 is provided with a normally closed filling opening 3l.whereby a suitable fluid 32 such as glycerlne may be placed within the pipe in the port from one cylinder to the other.

c From the foregoing, it will be apparent that when the valve 29 is opened, the pistons 8 are free to reciprocatewithin respective cylinders offering little or no resistance to the vehicle wheel 4. W'hen-it be. desired to bring the vehicle to a stop, the operator of the vehicle through the medium of a suitable mechanism will actuate the crank arm 30 of valve 29 thus closing the valve whereby an obstruction is offered to the fluid 32 passing throughthe pipe 27 from one cylinder to the other.. Manifestly, when the valve 29 is so closed, a back pressure will be formed in the cylinder and this back pressure of the fluid 32 on the piston will act opposingly with respect to the wheel 4 on the piston, consequently preventing the rotation of the wheel 4, resulting, of course, in the bringing of the vehicle to a stop. Immediately upon opening of the valve 29, the pistons 8 will be permitted to operate freely in their cylinders so that as the pistons move in one direction, one piston will suck in or draw the fluid through the pipe 27 into the cylinder of that particular piston for example as suggested in Figure 5 in cylinder 5; on the other hand the piston 8 operating in the other cylinder for example cylinder 6 will force the fluid 32 from cylinder 6 through the pipe 27.

Obviously, therefore, as the valve 29 is slowly actuated to be moved from an open to a closed position, pressure on the piston 8 will be gradual so that consequently the vehicle maybe brought to agradual.stop, thus per mitting the vehicle to be broughtto a smooth sto free of the jerking, the usual weakness, gra bing and other like undesirable results usually incident to applying the brake to a vehicle.

. Manifestly, the lubricant 25 within the cylinders between the pistons 8 and 10 will afford proper lubrication for the moving parts, and in addition to this lubrication, the pivotal connection between the sleeve 11 and push rod 13 may be also maintained in a well lubricated condition through the medium of grease cups'33; Furthermore, the ring 14 is provided with a transverse grease passage 34 whereby lubricant from a suitable grease cup) 35 extending radiallyfrom the ring may e supplied to the grooves 20 of the disks 15 and 16 thus maintaining these parts at all times in a" well lubricated condition. i

In Figure 2 I have shown each of the rear wheels 4 equipped with a brake mechanism of the character described in detail. To simultaneously operate the. valves 29 of the brake mechanism, I provide arock shaft 36 that extends transversely'of the chassis frame of the vehicle, the rock shaft 36 being suitably j ournalled in bearings 37 provided therefor on the chassis bar 1. At each end thereof the rock shaft 36 is provided with a crank arm 38 that has pivoted to its up er end as at 39 an internally threaded sleeve 40. The crank arm 30 of each of the valves 39 has pivoted to the free end thereof an operating rod 41, the same at its free end being threaded for threaded reception in one of the sleeves 40 thus providing as it were an adjustable connection between the crank shaft arm 30 ofthe valve, and the crank arm 38 of the rock shaft 36.

Intermediate its ends, the rock shaft 36 is also provided with a crank arm 42 that at its lower end is pivotally connected as at 43 with the control rod 40 adapted to have suitable operative connection with the brake pedal (not shown) of the vehicle. Obviously therefore when applying the brake, the brake pedal (not shown) may be pressed in the usual manner thus locking the shaft 36 whereby rotative movgnnent is transmitted to the valve crank arm 30 through the medium of the operating rods 41 so that obviously the valves 29 are simultaneously operated for closing the valve incident to applying braking action on the wheels 4.

In Figure 5 it will be noted that the con- 7 fronting ends of the cylinders are normall closed through the medium of caps 45 whic are suitably apertured for accommodating the rod 9. The caps 45 respectively are also provided with air vent openings 46.

The operation of the device is thought apparent, and that while the vehicle is in motion, the istons 8 will be permitted to reciprocate reely within the cylinders, the motion being transmitted to the-pistons through the medium of the eccentric connection of the push rod with the wheel of the vehicle. When it is desired to lessen the speed of the vehicle, or to bring the latter to a complete stop, the operator by pressing on the brake pedal (not shown) will rock shaft 36 thus, through the mechanism before described, close the valve 29 for checking orretarding the flow of fluid 32 through the fluid conduit with the result that compression in the cylinders will be increased preventing further movement of the pistons in their cylinders thus locking the wheel 4 of the vehicle against rotation whereby the vehicle is brought to a stop.

Even though I have herein shown and described, the preferred embodiment of theinvention, it is to be understood that the same is susceptible to changes fully comprehended by the spirit of the invention as herein described, and the scope of the appended claim.

Having thus described my invention, what I claim as new is:

In a device of the class described, a pair of spaced opposed rotary members having their confronting faces provided with eccentric grooves, a shim member located between said members and eccentrically arranged relative thereto, said shim member being of slightly less diameter than the internal di-j ameters of the grooves, means for fastening the two members and the shim member to gether, a reciprocatory member having a ring-shaped part attached to one end thereof and fitting in said grooves, said ringshaped part being of greater thickness than the reciprocatory member.

In testimony whereof I aflix my signature.

ALFRED E. DEYSS. 

